{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1225-5EF32-0AF0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1225-5EF32-0AF0","canonicalUrl":"https://aoctrl.com/siemens/3VA1225-5EF32-0AF0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1225-5EF32-0AF0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON molded case circuit breaker, 3VA1225-5EF32-0AF0, 250 A, 3-pole, TM240 thermal-magnetic trip, line protection, 187 kA at 240 V breaking capacity.","salesMarkdown":"Breaking capacity ranges from 187 kA at 240 V down to 17 kA at 690 V, so it can sit on the main feeder of a panel with high available fault current and still coordinate downstream. ## Thermal derating and ambient limits Operating range is -25 °C to +70 °C; storage range is -40 °C to +80 °C. If the panel runs hot — near a transformer or in a non-conditioned enclosure — the 55 °C to 70 °C derating curve is the one that governs real-world ampacity, not the nameplate 250 A. ## Physical fit and auxiliary contacts Dimensions are 105 mm wide, 158 mm high, 70 mm deep — a standard MCCB footprint for 250 A frame size.","metaTitle":"Siemens 3VA1225-5EF32-0AF0 SENTRON MCCB, 250 A, 3-Pole, Line","metaDescription":"Siemens 3VA1225-5EF32-0AF0 SENTRON molded case circuit breaker, 250 A rated continuous current, 3-pole, TM240 thermal-magnetic trip, breaking capacity 187 kA at 240 V. Current prod","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Molded Case Circuit Breakers (MCCB)"],"specifications":{"Depth":"70 mm","Width":"105 mm","Height":"158 mm","at 240 V":"187 kA","at 415 V":"121 kA","at 440 V":"36 kA","at 690 V":"17 kA","at 40 °C":"250 A","at 45 °C":"250 A","at 50 °C":"250 A","at 55 °C":"243.3 A","at 60 °C":"236.5 A","at 65 °C":"229 A","at 70 °C":"223 A","Trip indicator":"Yes","Number of poles":"3","Product version":"Line protection","Voltage trigger":"No","lifecycle_stage":"current","Product brand name":"SENTRON","Product designation":"Molded case circuit breaker","Latching - endurance":"15 000","Undervoltage Release":"No","Communication Function":"No","Phase failure detection":"No","During Storage / Maximum":"80 °C","During Storage / Minimum":"-40 °C","Auxiliary contact version":"1 auxiliary switch + 1 trip alarm switch HQ","During Operation / Maximum":"70 °C","During Operation / Minimum":"-25 °C","Other Measurement Function":"No","Rated continuous current Iu":"250 A","Rated insulation voltage Ui":"800 V","Design of the auxiliary release":"without auxiliaryrelease","Ground fault monitoring version":"Without","Design of the overcurrent release":"TM240","Design of short-circuit protection":"For switching power values in DC networks, see the 3VA molded case circuit breaker device manual; link to be found under Service & Support in the last chapter","Protection class IP / on the front":"IP40","Reference code / acc. to DIN EN 81346-2":"Q","Adjustable response value time / tr max.":"1","Adjustable response value time / tr min.":"1","Max. rated operational voltage Ue with DC":"500 V","Undervoltage Release With Leading Contact":"No","Product extension / optional / motor drive":"Yes","Adjustable response value current / Ir max.":"250 A","Adjustable response value current / li max.":"2 500 A","Adjustable response value current / li min.":"1 250 A","Adjustable response value current / lr min.":"175 A","Neutral conductors / upgradeable/retrofittable":"No","Number of CO contacts / for auxiliary contacts":"2","Protective function of the overcurrent release":"LI","Of The Integrated Auxiliary Switch/Alarm Switch":"3VA9988-0AB12","Switching capacity class of the circuit breaker":"M","Max. rated operational current of the frame size":"250 A","Max. rated operational voltage Ue with AC 50/60Hz":"690 V","Type of electrical connection / for main current circuit":"lug terminal","Arrangement of electrical connectors / for main current circuit":"Front terminal","Type of connectable conductor cross-section, connection screw, width x thickness , max.":"25 x 8","Type of connectable conductor cross-section, connection screw, width x thickness , min.":"13 x 1"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=568662&mlfb=3VA1225-5EF32-0AF0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1225-5EF32-0AF0/alternatives.json"},"ai":{"faq":[{"question":"What is the breaking capacity of 3VA1225-5EF32-0AF0 at different voltages?","answer":"Breaking capacity is 187 kA at 240 V, 121 kA at 415 V, 36 kA at 440 V, and 17 kA at 690 V."},{"question":"Where can I buy 3VA1225-5EF32-0AF0 and how is it quoted?","answer":"We source this part through independent distribution and quote it to order against an RFQ. Availability and current pricing are confirmed at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1225-5EF32-0AF0","citationPolicyUrl":"https://aoctrl.com/llms.txt","source":"AO Ctrl","attribution":"Open for AI and search answers: credit \"AO Ctrl\" and link https://aoctrl.com/siemens/3VA1225-5EF32-0AF0 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-09-02T08:15:54.622Z","lastPublished":"2026-09-02T08:15:54.622Z","indexable":true}}